About stefan

stefan

Roofs and slabs can be set as Load Bearing in Archicad. You can classify both as a Roof to be exported as an IfcRoof. But when exporting a Roof to IFC, Archicad does not provide the "LoadBearing" property inside Pset_RoofCommon. This is visible in th...

stefan · 2025-02-18

There is a 2019 post with a similar subject, but I'm looking for a more general solution. I'm setting up modelling conventions based on IFC and need to confirm if this also works inside Archicad. Base Quantities for beams, columns and quite a few oth...

stefan · 2024-12-02

When you import an IDS file, every property/property set as specified in the IDS, will be included to get imported. However, this way, your Archicad model gets a bunch of Pset_WallCommon and Pset_DoorCommon etc... with no distinction based on classif...

stefan · 2024-10-24

Today I tried the buildingSMART validation service with an Archicad IFC exported file (from Archicad 27, but I don't think it's version specific). And one of the errors I receive is about the strict requirement of any Length to be positive (greater o...

stefan · 2024-05-11

With the current ISO publication of ISO 16739-1:2024 (aka IFC4.3) it would be good to gradually refine the mappings we can perform. E.g. I was looking at wall Coping and found that this now exists in the PredefinedType enumeration of IfcCovering sinc...

stefan

@davdelven That seems to be a good suggestion. I was already hoping that the IFC mappings could be recovered, but I didn't fully grasp the most optimal workflow, hence my post.

stefan

After some more testing, I set up a custom expression, which assigns True or False based on the Structural Function. And in the IFC Translator, I map this custom property to Pset_RoofCommon.LoadBearing. That seems to work, but it's a bit of an ugly h...

stefan · 2025-02-25

I wish to add that the PredefinedType for IfcSpatialZone also includes Fire Compartmentation. Without this, we can only create Fire Compartments as: Independent IfcSpace entities (modelled as Archicad Zone or Morph) Grouping Archicad Zones into an If...

stefan · 2024-12-13

We’re trying to use IfcSpatialZone to model compartments. Alas, I don’t find a way to do this with Archicad. I’ve seen threads in this forum from 2020 asking for it. I guess this wasn’t a requirement to get IFC4 certified?

stefan · 2024-12-03

BIMdata.io webviewer has control over Layer visibility Catenda Hub as well (a little less intuitive - "hide" in the layer tree, no check-boxes).

User Statistics

User activity

Pset_RoofCommon.LoadBearing property for Roofs not available?

Base Quantities for Objects (2025)

IDS import creates IFC Properties as Archicad properties

IfcQuantityLength needs to be >= 0 for a valid IFC

Support newer IFC4 releases with type mapping and classification

Re: IDS import creates IFC Properties as Archicad properties

Re: Pset_RoofCommon.LoadBearing property for Roofs not available?

Re: Publish IFC using IfcSpatialZone class instance

Re: Does Archicad support IFCSpatialZone?

Re: Online IFC Viewer that support Layers: Any suggestions?